Estimating scale



Patented May 9, 1933 UNITED STATES 4.'bl-OIBJVIAN W. SCHROEDER ANDCLIFFORD E. HARTSING, 0F TOLEDO, OHIO Es'riMa'rING SCALE Application ledJuly 1,- 1931.

This invention relates to an estimating scale adapted to be used inconnection with building lplans for ascertaining the amount of heatradiation required for heating the various rooms or for estimating theamount of material required for any other pm-pose for which the scalemay be designed.

rlhe general object of the invention is to make it possible to obtainthe desired figures directly without any calculation. In the preferredembodiment of the invention, by applying the scale directly to thearchitectural plans the desired figures .may be read from the scaleWithout even ascertaining the numerical dimensions of the rooms forwhich the estimate is to be made.A

The specific details of 'the invention, and the manner of using 'a scale.constructed in accordance with the invention, will .be moreparticularly explained in connection with the accompanying drawing, inwhich- Figure l is a plan view of the scale as it appears in use, aportion of the envelope bein' broken away;

Iiigure 2 is a fragmentary view of the reverse side of the scale; and

Figure 3 is a section ltaken on the line 3--3-of Fig. l.l l l Asillustrated in the drawing, the scale comprises a card -'or sheet 5, ofrather stiff material, which is slidably mounted in an envelope 6. Thisenvelope is preferably made of Celluloid or other transparent materialand is open at both ends. On the face of the sheet 5, there appears atable of figures 7 arranged in horizontal and vertical rows andrepresenting the desired figures for rooms of various dimensions. In thepresent instance these figures represent the 49 square feet of steamradiation required for rooms of various dimensions having an 8 ft.ceiling. The figures on the scale are arranged for use in connectionwith architectural plans, which are almost universally drawn to a scaleof ML to the foot. The figures 7 are therefore, spaced horizontally andvertically ML" apart and the face of the envelope 6 is provided Withhorizontal lines 8 similarly spaced and adapted to register 5 with thehorizont-a1 rows of figures.

Serial No. 548,148.

In F ig. l, the scale represented as being applied on the architecturalplansl for estimating the radiation :re uired for the rooin which isindicatedby tie dotted lines 9. In'applyi-n-g the scale to thearchitectural plans the upper edge of the scale is superposed on theupper side of the room as i-ndicated on the plans and the left hand endof the envelope 6 is superposed on the left hand wall ofthe room. Thesheet 7 is then withdrawn toward the right until its left hand endregisters with the right hand'wall of the room. Then, following thehorrizontal line which registers with the lower wall of the room asrepresented on the plans, the last exposed figure lon lihisline, whichis represented in the drawing as 6.7, .represents the square feet .ofsteam radiation required for the room ,in question, Without v anyallowance for 'outside exposure. Y 'o In order to estimate the`allcwvance to be made for wall surface having an outside .cxposure, theupper edge .-o the sheet (-is pro?. vided with a scale v10. Thislast-mentioned scale is arranged to be laid alo 0' the ex#- 5 posed wallwith the left hand encoinciding with the left hand end'of the Wall. 'Iheligure which appears at-the right hand end o the exposed wall representsthe addi-tierr-l al radiation which is vrequired on account of theexposure. ,l Y

Additional allowance should also be made for exposed .glass surface inwindows ordoors. The figures for-this allowance may be inscribed onVvarious scales along the edge of the reverse slide of the sheet ASasindicated at 1l. .For example, if the window is 4261v high, the 26'.windowscale represented in Fig. 2 is laid along the Aviridfth-,of theWindow to determine the amount of additional radiation required. l vThetotal amount of radiation vrequired, for any given room will, therefore,be esti-A mated as the figure `obtained from the scale 7 plus theadditional amount of radiation required for exposed Wal-l surface andwindows as measured on 'the scales l0 and '1,1 respectively. Thisestimated will he or a .room of average conditions. Allowance may alsobe made ier other a'tOrS, Sllh as rooms facing in the direct-ion ofpre\'ailing' winds, rooms to be heated to other than average living roomtemperature, special construction or the like. The usual couversiontables or factors may be provided for modifying the estimate as to theseextraordinary conditions and likewise tables may be provided forestimating radiation required with vapor or hot water heat.

From the foregoing description, it willA be noted that our improvedscale may be applied directly to the architectural plans and the basisfor estimating the amount of radiation required may bevread directlyfrom the scale without any computation and without even ascertaining thedimensions of the room.

While we have shown the scale as designed for estimating steam radiationrequirements, it will be obvious that the same principle may be used ina scale for estimating other requirements for finishing the building,such as plaster, paper, paint, flooring and the like. It is our purposeto include such modifications within the scope of the appended claims.

What we claim is:

l. An estimating scale for use in connection with architectural plans,said scale comprising two members, one of said members being guided forrectilinear movement with reference to the other, one of said membershaving figures thereon disposed in horizontal and Vertical rows atdistances which are equal to units on the pla-ns, said figures being ofsuch value and relatively so arranged that, when a room on said plans isgaged by the scale, the figure representing the required estimate may bedirectly ascertained by its position Without ascertaining the dimensionsofthe room.

2. An estimating scale for use in connection with architectural plans,said scale comprising twovmembers,` one of said members being guidedfor'rectilinear movement with reference to the other, one of saidmembers having figures on'its face' disposed in horizontal and Verticalrows at distances which are equal to units on .the plans, said figuresbeing of such value and relatively so arranged that each ligurerepresents ythe required estimate for a room'whose length and width o'nthe plans are equal respectively to the distances of such figure fromthe end and side o the member on which it is inscribed.

3. An estimating scale for use in connection with architectural plans,said scale comprising a slideway, a slide guided longi1 tudinallytherein and having figures Adisposed on its face in horizontal andvertical rows at distances which are equal to units en the plans, eachfigure representing the estimating base for a `room whose dimensions o nthe plans are equal respectively to the distances of said figure fromone edge and one end of the slide.

4. An estimating scale for use in connection with architecture plans,said scale comprising a transparent envelope open at the ends, a slidehaving the same efective length as the envelope and `guidedlongitudinally therein, said'slide having figures disposed on its facein horizontal and vertical rows at distances which are equal to units onthe plans," the iigures on the slide .being of such value and relativelyso arranged Vthat, when the envelope is laid with a side and end thereofin registry with the upper side and one end of a room on the plans andthe slide withdrawn until its end registers with the other end of theroom, the last exposed figure -in alinemeut with the lower side of theroom represents the estimating basefor said room.

5. An estimating scale for use in connection with architecturall plans,said scale comprising a transparent envelope open at the ends, a slidehaving the same effective length as the envelope andguidedlongitudinallyftherein, said slide having figures disposed on itsface in horizontal and vertical rows at distances which are equal tounits on the plans, each ligure representing the estimating base for aroom whose dimensions on the plans are equal respectively to thedistance of said figure from one side and one end of the slide so that,when the envelope is laid with a side and end thereof in registry withthe upper side and one :end of a room on the plans.and the slide withfdrawn until its end registers with the other end of the room, the lastexposedfigure'on the slide in alinement with the lowerside of the roomrepresents the estimating base for said room.` v Y v In testimonywhereof We have v.hereunto signed our names to this specification.;A

NORMANV. SCHROEDER. CLIFFORD E. lHAR'ISIITG.

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